320403340542 has 48 divisors (see below), whose sum is σ = 680902623792. Its totient is φ = 100491509760.

The previous prime is 320403340531. The next prime is 320403340549. The reversal of 320403340542 is 245043304023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320403340549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6949438 + ... + 6995390.

It is an arithmetic number, because the mean of its divisors is an integer number (14185471329).

Almost surely, 2^320403340542 is an apocalyptic number.

320403340542 is an abundant number, since it is smaller than the sum of its proper divisors (360499283250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320403340542 is a wasteful number, since it uses less digits than its factorization.

320403340542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50013 (or 49996 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 320403340542 its reverse (245043304023), we get a palindrome (565446644565).

The spelling of 320403340542 in words is "three hundred twenty billion, four hundred three million, three hundred forty thousand, five hundred forty-two".